Shark

Scientific Classification:
Kingdom:
Animalia
Phylum:
Chordata
Class:
Chondrichthyes
Subclass:
Elasmobranchii
Infraclass:
Euselachii
Superorder:
Selachimorpha

What are Sharks?
Sharks are a large group of fish that have inhabited the oceans for over 400 million years, even before dinosaurs populated the Earth. They belong to the superorder Selachimorpha, and modern sharks have specific characteristics like a cartilaginous skeleton, five or six pairs of gills and several rows of teeth.

Anatomy

• Cartilage Skeleton
• Skin covered with dermal denticles
• Powerful Jaws
• Efficient Liver
• Anatomic Tail
• Dynamic fins
• Highly Developed Senses: Lateral Line, Ampillae of Lorenzini, A powerful sense of smell, Good eyesight, Good hearing

Habitat

Mostly, sharks live in saltwater, which is the ocean. Sharks are going to live where the water is deep enough that they can be well hidden and they can find enough food to survive. However, many sharks live closer to the surface in order to find the source of food they are after.

Sharks' Diet

Carnivorous Sharks

• They eat fish, mollusks, and crustaceans, dolphins, seals, sea lions, and porpoises, as well as large fish species such as tuna, mackerel, and even smaller shark species. Some even extend their consumption to seabirds.

Planktivore Sharks

• They eat planktons.

Some types of sharks

• Great White Shark
• Whale Shark
• Hammerhead Shark

Questions:

1. What superorder sharks in?

2. Where do the sharks mostly live?

3. What are the senses that sharks have?

4. What do carnivorous sharks eat?

5. How many gill do sharks have?

source: https://www.sharks-world.com

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